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IT01785: DEDUPLICATION BACKUP NOT WORKING AS EXPECTED FOR THE V7.1 CLIENT IF THE BACKUP INCLUDES THE WINDOWS SYSTEM STATE

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APAR status

  • Closed as program error.

Error description

  • In the V7.1 version of the Tivoli Storage Manager Windows client
    the deduplication backup does not work as expected if it
    includes the Windows system state (i.e. if the system state is
    part of backup process or backed up solely using the
    BACKUP SYSTEMSTATE command).
    
    The initial backup is working as several objects are backed up
    via the deduplication feature (client option
    "DEDUPLICATION ON").
    But later during the backup, the deduplication value
    (DEDUPLICATION ON) will incorrectly be set to NO.
    
    Nearly 90 % of all the files will be backed up without the
    deduplication feature.
    Also the deduplication backup statistics are missing.
    
    Customer/L2 Diagnostics:
    Here some examples from the backup statistics:
    
    1. The deduplication statistics are present after an incremental
    backup where the system state is excluded.
    
    Total number of objects inspected:      225,787
    Total number of objects backed up:          363
    Total number of objects updated:              0
    Total number of objects rebound:              0
    Total number of objects deleted:              0
    Total number of objects expired:         28,731
    Total number of objects failed:               0
    Total objects deduplicated:                   0
    Total number of bytes inspected:          94.57 GB
    Total number of bytes processed:          61.89 MB
    Total bytes before deduplication:             0  B
    Total bytes after deduplication:              0  B
    Total number of bytes transferred:        61.89 MB
    Data transfer time:                        5.44 sec
    Network data transfer rate:           11,649.99 KB/sec
    Aggregate data transfer rate:             42.58 KB/sec
    Objects compressed by:                        0%
    Deduplication reduction:                   0,00%
    Total data reduction ratio:               99,94%
    Elapsed processing time:               00:24:48
    
    2. The deduplication statistics are missing after an incremental
    backup where the system state is included.
    
    
    Total number of objects inspected:      227,611
    Total number of objects assigned:        75,603
    Total number of objects backed up:       66,534
    Total number of objects updated:              0
    Total number of objects rebound:              0
    Total number of objects deleted:              0
    Total number of objects expired:              7
    Total number of objects failed:              42
    Total number of subfile objects:              0
    Total number of bytes inspected:         148.85 GB
    Total number of bytes transferred:        55.73 GB
    Data transfer time:                    5,238.36 sec
    Network data transfer rate:           11,157.59 KB/sec
    Aggregate data transfer rate:          8,733.68 KB/sec
    Objects compressed by:                        0%
    Total data reduction ratio:               62,56%
    Subfile objects reduced by:                   0%
    Elapsed processing time:               01:51:32
    
    The following lines are missing:
    
      Total objects deduplicated:
      Total bytes before deduplication:
      Total bytes after deduplication:
      Deduplication reduction:
    
    
    
    Tivoli Storage Manager Versions Affected:
    Tivoli Storage Manager client 7.1 on Windows
    
    Initial Impact:
    medium
    
    Additional Keywords:
    TSM zz71 dedup system state
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Backup-archive client version 7.1.0          *
    *                 running on Microsoft Windows.                *
    ****************************************************************
    * PROBLEM DESCRIPTION:  See ERROR DESCRIPTION.                 *
    ****************************************************************
    * RECOMMENDATION: Apply fixing level when available. This      *
    *                 problem is currently projected to be fixed   *
    *                 in level 7.1.1. Note that this is subject    *
    *                 to change at the discretion of IBM.          *
    ****************************************************************
    *
    

Problem conclusion

  • The problem described in this APAR has been fixed so that it
    no longer occurs.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT01785

  • Reported component name

    TSM CLIENT

  • Reported component ID

    5698ISMCL

  • Reported release

    71W

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-05-19

  • Closed date

    2014-06-03

  • Last modified date

    2014-06-03

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Modules/Macros

  • DSMC
    

Fix information

  • Fixed component name

    TSM CLIENT

  • Fixed component ID

    5698ISMCL

Applicable component levels

  • R71W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 71W

Reference #: IT01785

Modified date: 03 June 2014